Mechanic Study Guides - Michigan

1 12/4/2018 Mechanic Study Guides Table of Contents Automobile & Light Truck (Vehicles under 10,000 lbs. GVW) Engine Repair .. 1 Automatic Transmission .. 2 Manual Transmission, Front & Rear Drive Axles .. 3 Front End, Suspension & Steering Systems .. 4 Brakes & Braking Systems .. 5 Electrical Systems .. 6 Heating & Air Conditioning .. 7 Engine Tune-up/Performance .. 8 Unitized Body & Structural Repair .. 9 Collision-Related Mechanical Repair .. 10 Motorcycle Repair .. 11 Recreational Trailer .. 12 Breath Alcohol Ignition Interlock Device (BAIID).

2 13 Heavy-Duty Truck Repair (Vehicles over 10,000 Ibs. GVW) Engine Repair Gasoline .. 14 Engine Repair Diesel .. 15 Drive Train .. 16 Brakes & Braking Systems .. 17 Suspension & Steering Systems .. 18 Electrical Systems .. 19 12/4/2018 1 Mechanic Study guide Engine Repair Automobile & Light Truck Repair Engine Block Diagnosis & Repair - 12% Using a bore gauge Honing a newly bored cylinder Engine bore diagnosis Installing pistons in block Cleaning and assembling Cylinder Head/Valve Train Diagnosis & Repair - 21% Intake valve deposits Valve tappet clearance Valve timing understanding Valve tappet adjustment Valve guide wear Valve refacing Valve spring diagnosis Noisy lifter diagnosis Valve seats General Engine Diagnosis - 19% Oil consumption

3 001 cylinder leakage test Compression test Sludge in crankcase Vacuum testing Low oil pressure Crankcase blow-by diagnosis Spark plug diagnosis Piston Diagnosis & Repair - 10% Piston design Ring groove diagnosis Piston ring diagnosis Crankshaft &Camshaft Diagnosis & Repair - 15% Crankshaft end-play Journal taper diagnosis Installing cam bearings Camshaft diagnosis Crankshaft diagnosis Miscellaneous - 23% Understanding measurements to Engine Assembling procedures Diagnosing coolant bubbling Micrometer reading Bolt head markings

4 Engine break-in Water pump diagnosis Turbocharger diagnosis Engine R&R procedures Basic carburetor diagnosis Vibration/misfire diagnosis Plastigage use SAMPLE QUESTION: A transverse mounted engine with front wheel drive must be removed from the car. All of the following are generally recommended EXCEPT: A. Removing the engine and transaxle as a unit. B. Disconnecting the speedometer cable. C. Disconnecting the half-shafts. D. Removing the differential gears. ANSWER: D 12/4/2018 2 Mechanic Study guide Automatic Transmission Automobile & Light Truck Repair Component Diagnosis - 8% Hydraulic pump Torque converter Clutch pack clearance Pump gear clearance Internal Operation - 32% Gear train end-play Clutch band servo Planetary gear set Multiple disc clutch packs Passing gear operation Lock-up converters Vacuum modulator Valve body shift valves Shift points Governor operation TPS (throttle position sensor)

5 Operation General Diagnosis - 18% Harsh engagement Governor malfunctions Fluid diagnosis Glazed band diagnosis Fluid leak diagnosis Pressure testing Spool valve diagnosis Burned clutch diagnosis Fluid loss diagnosis Drivability Diagnosis - 28% Downshift problems Improper shifting Upshifting problems Modulator problems Shift linkage adjustment No drive diagnosis Creeps in neutral Restricted filter Noisy transmission Slipping Transmission Sluggish operation Repair Procedures 6% Transmission remove & replace Stator support bushing wear Cooler line repair Pump to converter engagement Miscellaneous - 8% Valve identification Fluid types Transaxle knowledge Valve body components Direct drive condition SAMPLE QUESTION: It takes a moment for the car to move after the gear selector has been placed in drive.

6 Which of the following would cause this problem? A. A defective neutral safety switch. B. A partially plugged screen. C. An inoperative lock-up converter clutch. D. None of the above. ANSWER: B 12/4/2018 3 Mechanic Study guide Manual Transmission, Front & Rear Drive Axles Automobile & Light Truck Repair Component R & R - 10% Cluster gear remove & replace Extension housing seal remove & replace Synchronizer replacement Transmission/Transaxle Diagnosis - 30% Fluid diagnosis Hard shifting complaints Transmission vs. transaxle comparison Cluster gear end-play Transaxle gear recognition from picture Synchronizer problems & operation 3, 4 & 5 speed diagnosis from picture (4 questions)

7 Overdrive operation Extension housing bushing wear Noise diagnosis Defective output shaft Final Drive - 30% Ring gear run-out Noise diagnosis Differential diagnosis Differential pinion nose angle Ring & pinion gear sets Ring & pinion backlash Pinion bearing preload Final drive ratio Pinion seal remove & replace Limited slip diagnosis Differential bearing preload Lubricant Types Axle Shaft\ Repair - 10% CV boot installation Drive axle noise diagnosis (2 questions) CV joint operation Vibration Diagnosis Clutch Diagnosis & Repair 10% Clutch disc operation Noise diagnosis Chatter diagnosis Shifting problem diagnosis Miscellaneous - 10% Bearing removal and installation procedures Drive train noise diagnosis Gear recognition Trans interlock function Understanding how direct drive & gear reduction is accomplished SAMPLE QUESTION: The main reason for making a rear end gear tooth contact pattern is to check: A.

8 Carrier end-play. B. Carrier bearing preload. C. Axle gear clearance. D. Pinion depth. ANSWER: D 12/4/2018 4 Mechanic Study guide Front End, Suspension & Steering Systems Automobile & Light Truck Repair Alignment Diagnosis - 34% Toe adjustment procedures Caster adjustment procedures for various suspension systems Camber understanding Camber adjusting procedures for various suspension systems Total alignment procedures Caster understanding Strut suspension alignments Tire Wear Diagnosis - 10% Tire wearing angles Inside tread wear only Cupping Feathered outside edge wear Wear on both inside & outside of tire Suspension Diagnosis - 18% Ball joint diagnosis

9 Measuring curb height Torsion bar remove & replace Ball joint remove & replace procedure MacPherson suspensions Automatic leveling systems Steering Diagnosis - 18% Rack & pinion diagnosis Power assist diagnosis Tie rod end diagnosis Steering gear adjustment Steering linkage diagnosis Power steering system bleeding Drivability Diagnosis - 16% Pulling diagnosis Road crown compensation Wandering or darting diagnosis Shimmy & bounce diagnosis Steering wheel centering Miscellaneous - 4% Brake rotor R & R precautions Wheel bearing adjustment SAMPLE QUESTION: A car has excessive lean on turns (body roll).

10 This could be caused by: A. Bad shocks. B. Worn sway bar bushings. C. Weak springs. D. All the above. ANSWER: D 12/4/2018 5 Mechanic Study guide Brakes & Braking Systems Automobile & Light Truck Repair System Diagnosis - 20% Load sensing proportioning valves Brake pedal pulsation Grabbing brakes Brake lock-up Dragging brakes Combination valve Gear lube in drums Brake booster Master Cylinder Diagnosis & Repair - 9% Low fluid level Rebuilding Swollen diaphragm Sinking pedal ABS Diagnosis & Repair - 20% Pump/motor operation Safety precautions Speed sensors Wheel speed readings 3-way circuits 4-way circuits Hose replacement Drum